wal: warn if sync exceeds a second
wal: warn if sync exceeds a second

a-robinson/etcd,hongchaodeng/etcd,visheshnp/etcd,endocode/etcd,joshix/etcd,sinsharat/etcd,StorReduce/etcd,sebrandon1/etcd,rnaveiras/etcd,qqsun8819/etcd,gyuho/etcd,ajityagaty/etcd,akauppi/etcd,yudai/etcd,jonboulle/etcd,swingbach/etcd,mickep76/etcd,glycerine/etcd,ajityagaty/etcd,fanminshi/etcd,wantonsolutions/dinv-etcd,etcd-io/etcd,nekto0n/etcd,mickep76/etcd,zaphod-concur/etcd,plasticbox/etcd,dannysauer/etcd,handsomesun/etcd,StorReduce/etcd,armstrongli/etcd,jonboulle/etcd,tguangch/etcd,sebrandon1/etcd,a-robinson/etcd,insequent/etcd,ravigadde/etcd,qqsun8819/etcd,wantonsolutions/dinv-etcd,lumjjb/etcd,ktateish/etcd,bluebreezecf/etcd,glevand/coreos--etcd,nekto0n/etcd,luxas/etcd,tguangch/etcd,swingbach/etcd,whuwxl/etcd,glycerine/etcd,vimalk78/etcd,bluebreezecf/etcd,rnaveiras/etcd,etcd-io/etcd,OyTao/etcd_learning,jlamillan/etcd,mqliang/etcd,mkumatag/etcd,rnaveiras/etcd,vimalk78/etcd,cockroachdb/etcd,armstrongli/etcd,bdarnell/etcd,coreos/etcd,chipironcin/etcd,CrazyJvm/etcd,sofuture/etcd,ktateish/etcd,mqliang/etcd,cockroachdb/etcd,YuleiXiao/etcd,lorneli/etcd,sinsharat/etcd,westhood/etcd,westhood/etcd,mkumatag/etcd,dannysauer/etcd,plasticbox/etcd,rchicoli/etcd,wantonsolutions/dinv-etcd,sofuture/etcd,akauppi/etcd,coreos/etcd,hongchaodeng/etcd,YuleiXiao/etcd,visheshnp/etcd,jlamillan/etcd,rchicoli/etcd,linuxcer/etcd,mkumatag/etcd,CrazyJvm/etcd,insequent/etcd,yudai/etcd,bdarnell/etcd,etcd-io/etcd,gyuho/etcd,handsomesun/etcd,ravigadde/etcd,joshix/etcd,li-ang/etcd,whuwxl/etcd,heyitsanthony/etcd,heyitsanthony/etcd,zaphod-concur/etcd,linuxcer/etcd,mqliang/etcd,purpleidea/etcd,fanminshi/etcd,xiang90/etcd,li-ang/etcd,purpleidea/etcd,glevand/coreos--etcd,lumjjb/etcd,OyTao/etcd_learning,chipironcin/etcd,endocode/etcd,lorneli/etcd,xiang90/etcd,luxas/etcd,ajityagaty/etcd